AFAIK Steam, Amazon, or other stores that are platform agnostic don't have the capability to report how someone is using their computer, like what programs they run, it's bad enough that Microsoft include things like the Customer Experience Improvement Program (CEIP) that we are told doesn't uniquely identify people even though it gathers IP addresses that can now be linked to a Microsoft account.
Sure Steam knows how often and how long i play a game, Amazon knows i have a kettle with built in water filter, but there are limits to what they know.
They don't have a gaming console with built in camera in my home, they don't know how often i phone someone or where i am when i place a call, what software i run on my
personal computer and how often i use the start menu along with a plethora of other telemetry about how i use
my personal computer, they can't link all that metadata together and attribute it to an individual.
I wouldn't count those chickens yet.
Windows 10 hasn't even been released, its unknown what's going to happen after the year of free upgrades is over, or what Microsoft consider the lifetime of a device.
For me that's part of the problem, the best prediction of future behavior is past behavior so you'll have to forgive me when i say I'll believe it when i see it.